抜けてる

be missing, be absent-minded, be airheaded

→ 抜ける
抜け come out, fall out + てる Progressive/continuative
verb · indicative Rare #25,934
be missing Colloquial contraction of 抜けている. Used when something is absent or has come out.
JA: この本は一ページ抜けてる。
EN: One page is missing from this book.
be absent-minded, be airheaded Colloquial contraction of 抜けている; describes someone who is forgetful or lacking common sense.
JA: 彼はちょっと抜けてる。
EN: He's a little absent-minded.
Conjugation of 抜ける
Indicative
抜けてる

どうも何かしっくりこないんだ何か抜けてる

Something just doesn't feel right. I'm missing something.

— サイコ (1960)

何か抜けてるかい

Did I miss anything?

— アトランティス 失われた帝国 (2001)

メアリーちょっと抜けてるけど素直いい子だ

Mary's a little scatterbrained, but she's honest and sweet.

トムってそんなに抜けてる

Is Tom really that absent-minded?

何か抜けてる

Something's missing.

タイヤ空気が抜けてる

Your tire is flat.